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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #undef TRACE_SYSTEM |
| 3 | #define TRACE_SYSTEM vmalloc |
| 4 | |
| 5 | #if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ) |
| 6 | #define _TRACE_VMALLOC_H |
| 7 | |
| 8 | #include <linux/tracepoint.h> |
| 9 | |
| 10 | /** |
| 11 | * alloc_vmap_area - called when a new vmap allocation occurs |
| 12 | * @addr: an allocated address |
| 13 | * @size: a requested size |
| 14 | * @align: a requested alignment |
| 15 | * @vstart: a requested start range |
| 16 | * @vend: a requested end range |
| 17 | * @failed: an allocation failed or not |
| 18 | * |
| 19 | * This event is used for a debug purpose, it can give an extra |
| 20 | * information for a developer about how often it occurs and which |
| 21 | * parameters are passed for further validation. |
| 22 | */ |
| 23 | TRACE_EVENT(alloc_vmap_area, |
| 24 | |
| 25 | TP_PROTO(unsigned long addr, unsigned long size, unsigned long align, |
| 26 | unsigned long vstart, unsigned long vend, int failed), |
| 27 | |
| 28 | TP_ARGS(addr, size, align, vstart, vend, failed), |
| 29 | |
| 30 | TP_STRUCT__entry( |
| 31 | __field(unsigned long, addr) |
| 32 | __field(unsigned long, size) |
| 33 | __field(unsigned long, align) |
| 34 | __field(unsigned long, vstart) |
| 35 | __field(unsigned long, vend) |
| 36 | __field(int, failed) |
| 37 | ), |
| 38 | |
| 39 | TP_fast_assign( |
| 40 | __entry->addr = addr; |
| 41 | __entry->size = size; |
| 42 | __entry->align = align; |
| 43 | __entry->vstart = vstart; |
| 44 | __entry->vend = vend; |
| 45 | __entry->failed = failed; |
| 46 | ), |
| 47 | |
| 48 | TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d", |
| 49 | __entry->addr, __entry->size, __entry->align, |
| 50 | __entry->vstart, __entry->vend, __entry->failed) |
| 51 | ); |
| 52 | |
| 53 | /** |
| 54 | * purge_vmap_area_lazy - called when vmap areas were lazily freed |
| 55 | * @start: purging start address |
| 56 | * @end: purging end address |
| 57 | * @npurged: numbed of purged vmap areas |
| 58 | * |
| 59 | * This event is used for a debug purpose. It gives some |
| 60 | * indication about start:end range and how many objects |
| 61 | * are released. |
| 62 | */ |
| 63 | TRACE_EVENT(purge_vmap_area_lazy, |
| 64 | |
| 65 | TP_PROTO(unsigned long start, unsigned long end, |
| 66 | unsigned int npurged), |
| 67 | |
| 68 | TP_ARGS(start, end, npurged), |
| 69 | |
| 70 | TP_STRUCT__entry( |
| 71 | __field(unsigned long, start) |
| 72 | __field(unsigned long, end) |
| 73 | __field(unsigned int, npurged) |
| 74 | ), |
| 75 | |
| 76 | TP_fast_assign( |
| 77 | __entry->start = start; |
| 78 | __entry->end = end; |
| 79 | __entry->npurged = npurged; |
| 80 | ), |
| 81 | |
| 82 | TP_printk("start=0x%lx end=0x%lx num_purged=%u", |
| 83 | __entry->start, __entry->end, __entry->npurged) |
| 84 | ); |
| 85 | |
| 86 | /** |
| 87 | * free_vmap_area_noflush - called when a vmap area is freed |
| 88 | * @va_start: a start address of VA |
| 89 | * @nr_lazy: number of current lazy pages |
| 90 | * @nr_lazy_max: number of maximum lazy pages |
| 91 | * |
| 92 | * This event is used for a debug purpose. It gives some |
| 93 | * indication about a VA that is released, number of current |
| 94 | * outstanding areas and a maximum allowed threshold before |
| 95 | * dropping all of them. |
| 96 | */ |
| 97 | TRACE_EVENT(free_vmap_area_noflush, |
| 98 | |
| 99 | TP_PROTO(unsigned long va_start, unsigned long nr_lazy, |
| 100 | unsigned long nr_lazy_max), |
| 101 | |
| 102 | TP_ARGS(va_start, nr_lazy, nr_lazy_max), |
| 103 | |
| 104 | TP_STRUCT__entry( |
| 105 | __field(unsigned long, va_start) |
| 106 | __field(unsigned long, nr_lazy) |
| 107 | __field(unsigned long, nr_lazy_max) |
| 108 | ), |
| 109 | |
| 110 | TP_fast_assign( |
| 111 | __entry->va_start = va_start; |
| 112 | __entry->nr_lazy = nr_lazy; |
| 113 | __entry->nr_lazy_max = nr_lazy_max; |
| 114 | ), |
| 115 | |
| 116 | TP_printk("va_start=0x%lx nr_lazy=%lu nr_lazy_max=%lu", |
| 117 | __entry->va_start, __entry->nr_lazy, __entry->nr_lazy_max) |
| 118 | ); |
| 119 | |
| 120 | #endif /* _TRACE_VMALLOC_H */ |
| 121 | |
| 122 | /* This part must be outside protection */ |
| 123 | #include <trace/define_trace.h> |
| 124 |
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